Future space stations will create an artificial gravity by rotating. Consider a cylindrical space station 340 m diameter rotating about its central axis. Astronauts walk on the inside surface of the space station. What rotation period will provide "normal" gravity?

Which instrument is used to measure air temperature

How many molecules are present in 3 mols of silicon dioxide (sio2)?

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error